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US6546830B2 - Transmission device of four-wheel drive vehicle - Google Patents

Transmission device of four-wheel drive vehicle Download PDF

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Publication number
US6546830B2
US6546830B2 US09/951,765 US95176501A US6546830B2 US 6546830 B2 US6546830 B2 US 6546830B2 US 95176501 A US95176501 A US 95176501A US 6546830 B2 US6546830 B2 US 6546830B2
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US
United States
Prior art keywords
gear
shaft
input shaft
driving force
transmission device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
US09/951,765
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English (en)
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US20020066324A1 (en
Inventor
Kazuo Kanazawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Subaru Corp
Original Assignee
Fuji Jukogyo KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fuji Jukogyo KK filed Critical Fuji Jukogyo KK
Assigned to FUJI JUKOGYO KABUSHIKI KAISHA reassignment FUJI JUKOGYO KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: KANAZAWA, KAZUO
Publication of US20020066324A1 publication Critical patent/US20020066324A1/en
Application granted granted Critical
Publication of US6546830B2 publication Critical patent/US6546830B2/en
Priority to US10/657,060 priority Critical patent/USRE39669E1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/344—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having a transfer gear
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/34—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles
    • B60K17/348—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed
    • B60K17/35—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches
    • B60K17/3505—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches with self-actuated means, e.g. by difference of speed
    • B60K17/351—Arrangement or mounting of transmissions in vehicles for driving both front and rear wheels, e.g. four wheel drive vehicles having differential means for driving one set of wheels, e.g. the front, at one speed and the other set, e.g. the rear, at a different speed including arrangements for suppressing or influencing the power transfer, e.g. viscous clutches with self-actuated means, e.g. by difference of speed comprising a viscous clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/08—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles
    • B60K23/0808—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for changing number of driven wheels, for switching from driving one axle to driving two or more axles for varying torque distribution between driven axles, e.g. by transfer clutch
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K17/00—Arrangement or mounting of transmissions in vehicles
    • B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
    • B60K17/06—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing
    • B60K17/08—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing of change-speed gearing of mechanical type
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19074—Single drive plural driven
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19023—Plural power paths to and/or from gearing
    • Y10T74/19074—Single drive plural driven
    • Y10T74/19079—Parallel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19219—Interchangeably locked
    • Y10T74/19242—Combined gear and clutch

Definitions

  • the present invention relates to a transmission device of a four-wheel drive vehicle.
  • the present invention relates to the transmission device, in which an engine driving force is transmitted from an input shaft to a hollow counter shaft while a rotational speed is changed.
  • the engine driving force is further transmitted to an output shaft of either one of front and rear wheels inserted in a hollow portion of the counter shaft.
  • the engine driving force is also transmitted to an output shaft of the other one of the front and rear wheels.
  • the engine driving force is transmitted from the input shaft to the hollow counter shaft while a rotational speed is changed, and the engine driving force is transmitted from the counter shaft to the output shaft of the front (rear) wheel and to the output shaft of the rear (front) wheel disposed on the same rotation axis as the input shaft.
  • Japanese Patent Unexamined Publication No. Hei. 7-167257 discloses a transmission device of a four-wheel drive vehicle that comprises an input shaft, a hollow counter shaft, a front wheel side output shaft, a drive gear and a driven gear.
  • the input shaft receives the engine driving force.
  • the hollow counter shaft is disposed in parallel to this input shaft to transmit the engine driving force for changing a rotational speed to a predetermined one.
  • the output shaft of the front wheel is inserted in a hollow portion of the counter shaft to transmit the driving force to a final reduction gear of a front wheel.
  • the drive gear is coaxially coupled to an end of the output shaft through a center differential device and a viscous coupling.
  • the driven gear engages with the drive gear to change a rotation axis to the same rotation axis as the input shaft and to change the rotating shaft to the output shaft of the rear wheel
  • the center differential device and the viscous coupling are positioned on the same rotation axis as the counter shaft, that is, at a lower portion in a transmission case, and there is a problem that gears stir oil to produce useless resistance, and fuel efficiency is deteriorated.
  • a main speed change is performed on the same shaft as the input shaft of the engine driving force.
  • a transfer device of the four-wheel drive vehicle as a center differential device or a viscous coupling is also disposed on the same shaft as the input shaft of the engine driving force.
  • the center differential and the viscous coupling are disposed on the same rotating axis as the counter shaft, it has been difficult to use the power distribution devices of the four-wheel drive vehicle for the automatic transmission vehicle and the respective mechanisms in common.
  • the invention has been made in view of the above circumstances.
  • An object is to provide a transmission device of a four-wheel drive vehicle in which the improvement of fuel efficiency caused by the lowering of stir resistance of oil can be easily realized with space saving. Further, it is also an object of the invention that a power distribution device of an automatic transmission can be used in common. Moreover, it is also an object of the present invention to easily adopt various existing transfer mechanisms and shorten a development term.
  • a transmission device of a four-wheel drive vehicle comprising:
  • a first output shaft disposed in a hollow portion of the counter shaft, for transmitting the driving force to a final reduction gear of one of front and rear wheels;
  • a second output shaft coupled with the second drive gear through a variable mechanism to transmit the driving force to a final reduction gear of the other one of the front and rear wheels.
  • a transmission device of a four-wheel drive vehicle comprising:
  • a first output shaft disposed in a hollow portion of the counter shaft, for transmitting the driving force to a final reduction gear of one of front and rear wheels;
  • a second output shaft rotated about the rotating axis of the input shaft and coupled with the first driven gear to transmit the driving force to a final reduction gear of the other one of the front and rear wheels.
  • the first output shaft transmits the driving force to the final reduction gear of the front wheel
  • the second output shaft transmits the driving force to the final reduction gear of the rear wheel
  • a partition wall for shutting off infiltration of an oil between a first space at a first side having the input shaft and a second space at a second side having the first drive gear.
  • variable mechanism is a viscous-coupling or a hydraulic multiple disk clutch.
  • an engine-driven oil pump for generating a hydraulic pressure to operate the hydraulic multiple disk clutch.
  • the engine-driven oil pump is disposed at the partition wall.
  • the engine driving force is first transmitted to the input shaft, and is transmitted from the input shaft to the hollow counter shaft disposed under and in parallel to that while the speed is changed to the predetermined one.
  • the driving force is transmitted from the first drive gear disposed at the end portion of the counter shaft to the first driven gear for shifting the rotating axis of the counter shaft to the rotating axis of the input shaft.
  • the driving force is transmitted to the first output shaft inserted in the hollow portion of the counter shaft that transmits the driving force to the final reduction gear of either one of front and rear wheels through the second drive gear having the rotating shaft disposed integrally with the first driven gear and the second driven gear disposed at the base end side of the first output shaft.
  • the driving force is transmitted from the rotating shaft of the second drive gear through the torque transmission capacity variable means to the second output shaft for transmitting the driving force to a final reduction gear of the other of front and rear wheels.
  • the variable means is disposed above the input shaft for the space-saving, so that the improvement of fuel efficiency caused by the lowering of the stirring resistance of the lubrication oil can be realized.
  • the variable means since the variable means is disposed above the input shaft, it becomes possible to use the automatic transmission of the power distribution device in common, and further, various existing transfer mechanisms can be easily adopted, and a development period can be shortened.
  • the engine driving force is first transmitted to the input shaft, and is transmitted from the input shaft to the hollow counter shaft disposed in parallel to that while the rotational speed is changed to the predetermined one.
  • the driving force is transmitted from the first drive gear disposed at the end portion of the counter shaft to the first driven gear for shifting the rotating axis of the counter shaft to the rotating axis of the input shaft.
  • the driving force is transmitted to the second output shaft coupled with the rotating axis of the first driven gear, and is transmitted to the final reduction gear of the other of the front and rear wheels.
  • the driving force is transmitted from the first driven gear through the variable means to the second drive gear coupled on the same rotating axis, and the second driven gear is rotated by the rotation of the second drive gear, and the first output shaft inserted in the hollow portion of the counter shaft is rotated, so that the driving force is transmitted to the final reduction gear of the either one of front and rear wheels.
  • the variable means is disposed above the input shaft for the space-saving, so that the improvement of fuel efficiency caused by the lowering of stir resistance of oil can be realized.
  • the variable means since the variable means is disposed above the input shaft, it becomes possible to use the automatic transmission of the power distribution device in common, and further, various existing transfer mechanisms can be easily adopted, and a development period can be shortened.
  • the partition wall when the partition wall is provided for shutting off the infiltration of the oil between the space at the side having the input shaft and the space at the side having the first drive gear, the oil in the space at the side having the input shaft and the oil in the space at the side having the first drive gear can be made different from each other. Accordingly, it becomes possible to easily adopt an optimum oil especially for the torque transmission capacity variable mechanism.
  • variable means is the hydraulic multiple disk clutch
  • the engine-driven oil pump body for generating the hydraulic pressure for operating the hydraulic multiple disk clutch is provided at the partition wall, the structure of an oil seal becomes simple.
  • FIG. 1 is a sectional view for explaining an entire transmission according to a first embodiment of the invention
  • FIG. 2 is a schematic view showing a transfer portion in FIG. 1;
  • FIG. 3 is the schematic view showing a transfer portion according to a second embodiment of the invention.
  • FIG. 4 is a sectional view for explaining an entire transmission structure according to a third embodiment of the invention.
  • FIG. 5 is a schematic view showing the transfer portion in FIG. 4 .
  • FIGS. 1 and 2 relate to a first embodiment of the invention
  • FIG. 1 is a sectional view for explaining an entire transmission
  • FIG. 2 is a schematic view showing a transfer portion.
  • reference numeral 1 designates an engine; and 2 , a manual transmission coupled with the rear of the engine 1 .
  • a gearbox case 4 is integrally formed behind a clutch housing 3 of the manual transmission 2 , and a transfer case 5 is coupled with a rear side of the gearbox case 4 , and further, an extension case 6 is sequentially coupled with the rear of the transfer case 5 .
  • the input shaft 8 is positioned on the same axis as a not-shown crank shaft of the engine 1 .
  • the input shaft 8 is provided in such a manner that it passes through the inside of the gearbox case 4 .
  • the rear end of the input shaft 8 protrudes into the transfer case 5 .
  • a final reduction gear 9 of a front wheel is disposed under the input shaft 8 at a front position.
  • a hollow counter shaft 10 is disposed behind the final reduction gear 9 of the front wheel and in parallel to the input shaft 8 .
  • a first-speed gear train 11 In the inside of the gearbox case 4 , between the input shaft 8 and the counter shaft 10 , a first-speed gear train 11 , a second-speed gear train 12 , a third-speed gear train 13 , and a fourth-speed gear train 14 are sequentially disposed from the front, and synchro mechanisms 15 and 16 are respectively provided between the two gears. Besides, a reverse gear train 17 is disposed between the first-speed gear train 11 and the second-speed gear train 12 . Further, in the inside of the transfer case 5 , a fifth-speed gear train 18 and a synchro mechanism 19 are disposed between the input shaft 8 and the counter shaft 10 . Such a structure is made that the above three synchro mechanisms 15 , 16 and 19 are selectively operated to make a shift to any one of the five forward speeds, and a shift is freely made into reverse by the engagement of the reverse gear train 17 .
  • a front drive shaft 20 as one of the output shaft is inserted in the inside of the counter shaft 10 , and behind the input shaft 8 , an intermediate output shaft 21 is disposed coaxially with the input shaft 8 .
  • a drive pinion gear 20 a engaging with a hypoid driven gear 9 a of the final reduction gear 9 of the front wheel is provided at the front end of the front drive shaft 20 .
  • a rear drive shaft 22 for transmitting the driving force to a final reduction gear (not shown) of a rear wheel through a propeller shaft is disposed as the other output shaft coaxially with the intermediate output shaft 21 .
  • a transfer drive gear 23 as a first drive gear is provided behind the rear end of the counter shaft 10
  • a reduction driven gear 24 as a second driven gear is provided behind the rear end of the front drive shaft 20 .
  • the transfer drive gear 23 and the reduction driven gear 24 are engaged with a transfer driven gear 25 as a first driven gear integrally formed with the intermediate output shaft 21 , and a reduction drive gear 26 as a second drive gear.
  • the rear end side of the intermediate output shaft 21 is coupled with the front end of the rear drive shaft 22 through a torque coupling device 27 , such as a viscous coupling.
  • the torque coupling device 27 acts as a variable means constituting the main portion of a center differential device. Thereby, a front engine-front drive (FF) based four-wheel drive vehicle can be formed.
  • FF front engine-front drive
  • the driving force from the engine 1 is transmitted to the input shaft 8 , and is transmitted from the input shaft 8 to the counter shaft 10 while the speed is changed to any one of the five forward speeds and the one backward speed.
  • the driving force transmitted to the counter shaft 10 is transmitted to the intermediate output shaft 21 through the transfer drive gear 23 and the transfer driven gear 25 while the rotating axis is shifted onto the same axis as the input shaft 8 .
  • the driving force is transmitted from the intermediate output shaft 21 through the reduction drive gear 26 and the reduction driven gear 24 to the front drive gear 20 .
  • the driving force is further transmitted to the final reduction gear 9 of the front wheel.
  • the driving force is also transmitted from the intermediate output shaft 21 through the torque coupling device 27 to the rear drive shaft 22 and the driving force is transmitted to a not-shown final reduction gear of the rear wheel. Accordingly, a front engine-front drive (FF) based four-wheel drive running is made.
  • FF front engine-front drive
  • the torque coupling device 27 is shifted to the same axis as the input shaft 8 and is arranged for space-saving, so that the improvement of fuel efficiency caused by the lowering of stirring resistance of the transmission lubrication oil is realized.
  • the torque coupling device 27 is disposed above the input shaft 8 with respect to the power distribution device, it also becomes possible to use the automatic transmission in common, and further, various existing transfer mechanisms can be easily adopted, so that a development time period can be shortened.
  • FIG. 3 is a schematic view showing a transfer portion according to a second embodiment of the invention.
  • the invention is applied to a front engine-rear drive based four-wheel drive vehicle, and only portions different from the first embodiment will be described in detail with reference to the schematic view, and the description of the other portions will be omitted since these are similar to the first embodiment.
  • a transfer drive gear 31 as a first drive gear is provided at the rear end of a counter shaft 10
  • a reduction driven gear 32 as a second driven gear is provided at the rear end of a front drive shaft 20 .
  • the transfer drive gear 31 and the reduction driven gear 32 are engaged with a transfer driven gear 33 as a, first driven gear on the same rotating axis and a reduction drive gear 34 as a second drive gear.
  • the transfer driven gear 33 as the other output shaft is connected to the front end of a rear drive shaft 35 for transmitting the driving force through a propeller shaft to a final reduction gear (not shown) of the rear wheel.
  • the transfer driven gear 33 is coupled with the reduction gear 34 through a torque coupling device 36 , such as the viscous coupling, as the variable means constituting the main portion of the center differential device, and a front engine-rear drive (FR) based four-wheel drive vehicle is constructed.
  • the driving force from the engine 1 is transmitted to the input shaft 8 and is transmitted from the input shaft 8 to the counter shaft 10 while the speed is changed to any one of five forward speeds and one backward speed.
  • the driving force transmitted to the counter shaft 10 is transmitted to the rear drive shaft 35 through the transfer drive gear 31 and the transfer driven gear 33 , and is transmitted to the final reduction gear (not shown) of the rear wheel from the rear drive shaft 35 through the propeller shaft.
  • the driving force is also transmitted from the transfer driven gear 33 to the reduction drive gear 34 through the torque coupling device 36 .
  • the driving force is transmitted to the final reduction gear 9 of the front wheel through the reduction driven gear 32 and the front drive shaft 20 so that a front engine-rear drive (FR) based four-wheel drive running is made.
  • FR front engine-rear drive
  • the torque coupling device 36 is shifted onto the same axis as the input shaft 8 and is arranged, so that the improvement of fuel efficiency caused by the lowering of stirring resistance of the transmission lubrication oil can be realized.
  • the torque coupling device 36 is disposed above the input shaft 8 , with respect to the power distribution device, it also becomes possible to use the automatic transmission in common, and further, various existing transfer mechanisms can be easily adopted, and a development time period can be shortened.
  • FIG. 4 and FIG. 5 show a third embodiment of the present invention
  • FIG. 4 is a sectional view for explaining the entire transmission
  • FIG. 5 is the schematic view showing the transfer portion.
  • the torque coupling-type device of the first embodiment is replaced with a wet hydraulic multiple disk clutch in which fastening force is varied in accordance with the movement state of the vehicle.
  • incorporated is an oil pump for applying an operation oil pressure to the hydraulic multiple disk clutch.
  • the other structure of the third embodiment is the same as the first embodiment, and the same portions are designated by the same characters and their description is omitted.
  • the rear end side of an intermediate output shaft 21 is coupled with the front end side of a rear drive shaft 22 through a wet-type hydraulic multiple disk clutch (transfer clutch) 40 as the variable means constituting the main portion of a center differential device.
  • a wet-type hydraulic multiple disk clutch (transfer clutch) 40 as the variable means constituting the main portion of a center differential device.
  • the transfer clutch 40 controls a duty solenoid provided inside or outside a manual transmission 2 , an oil pressure control device 41 of a control valve by a not-shown control device in accordance with the movement state of the vehicle, and a piston 40 a is operated.
  • a partition wall 42 for shutting off a space at a side of the input shaft 8 and the space at the side of the intermediate output shaft 21 is formed in a transfer case 5 .
  • the front end of the intermediate output shaft 21 is rotatably supported through bearings, and a shaft portion of a transfer drive gear 23 is inserted in a hole formed in the partition wall 42 .
  • a pump casing 43 a of an oil pump 43 for applying the operation oil pressure to the transfer clutch 40 is attached to the partition wall 42 at the side of the input shaft 8 by using the plane of the partition wall 42 .
  • a pump rotating shaft 43 b extending from the rear end of the input shaft 8 is inserted in the pump casing 43 a and is coupled with a not-shown inner rotor in the pump casing 43 a.
  • the pump casing 43 a and the pump rotating shaft 43 b are sealed with an oil seal 44 .
  • the partition wall 42 and the shaft portion of the transfer drive gear 23 are sealed with an oil seal 45 .
  • the counter shaft 10 and the front drive shaft 20 are sealed with an oil seal 46 at the front side of the transfer drive gear 23 .
  • Shutted off is yhe infiltration of oil between the space at the side of the input shaft 8 and the space at the side of the intermediate output shaft 21 is shut off.
  • reference numeral 47 designates a strainer.
  • the operation oil in which a viscosity change due to a temperature change is slight such as ATF (Automatic Transmission Fluid)
  • ATF Automatic Transmission Fluid
  • the manual transmission has a bevel gear, generally, the hypoid gear, a transmission oil which is excellent for using in extreme pressure performance must be used.
  • the transfer portion is made a chamber separate from a transmission body.
  • the engine must drive the oil pump as an oil pressure source, and the oil pump 43 uses the oil for the hydraulic control system, such as the ATF, so that sealing becomes complicated.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Arrangement Of Transmissions (AREA)
  • Transmission Devices (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
US09/951,765 2000-09-14 2001-09-13 Transmission device of four-wheel drive vehicle Ceased US6546830B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US10/657,060 USRE39669E1 (en) 2000-09-14 2003-09-08 Transmission device of a four-wheel drive vehicle

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPP.2000-280602 2000-09-14
JP2000280602A JP4519296B2 (ja) 2000-09-14 2000-09-14 ４輪駆動車のトランスミッション装置
JP2000-280602 2000-09-14

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US10/657,060 Reissue USRE39669E1 (en) 2000-09-14 2003-09-08 Transmission device of a four-wheel drive vehicle

Publications (2)

Publication Number Publication Date
US20020066324A1 US20020066324A1 (en) 2002-06-06
US6546830B2 true US6546830B2 (en) 2003-04-15

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US09/951,765 Ceased US6546830B2 (en) 2000-09-14 2001-09-13 Transmission device of four-wheel drive vehicle
US10/657,060 Expired - Lifetime USRE39669E1 (en) 2000-09-14 2003-09-08 Transmission device of a four-wheel drive vehicle

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US10/657,060 Expired - Lifetime USRE39669E1 (en) 2000-09-14 2003-09-08 Transmission device of a four-wheel drive vehicle

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US (2) US6546830B2 (ja)
EP (1) EP1188593B1 (ja)
JP (1) JP4519296B2 (ja)
AT (1) ATE319585T1 (ja)
DE (1) DE60117652T2 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
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US20030150286A1 (en) * 2000-04-25 2003-08-14 Mitsuo Kayano Automatic transmission
US20030183028A1 (en) * 2002-03-27 2003-10-02 Hiromichi Shimaguchi Automatic transmission
US20090158867A1 (en) * 2007-12-22 2009-06-25 Frank Buhrke Transmission Arrangement Of An Agricultural Or Industrial Utility Vehicle
US20120240699A1 (en) * 2011-02-14 2012-09-27 Audi Ag Drive arrangement for a motor vehicle
US20150352949A1 (en) * 2013-01-28 2015-12-10 Eicher Polaris Private Limited Side-by-side utility vehicle
US20200332720A1 (en) * 2019-04-18 2020-10-22 Hamilton Sundstrand Corporation Transmission systems having clutch at output side

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20070260A1 (it) * 2007-04-13 2008-10-14 Cnh Italia Spa Dispositivo di presa di forza per un veicolo agricolo, in particolare un trattore
US9086120B2 (en) * 2008-07-03 2015-07-21 Deere & Company Compact creeper gear arrangement for a transmission
CN108437785B (zh) * 2018-05-18 2024-06-04 湖南农业大学 一种铰接式车辆四驱变速器
JP7420021B2 (ja) * 2020-09-02 2024-01-23 マツダ株式会社 車両の動力伝達装置

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US7222551B2 (en) * 2000-04-25 2007-05-29 Hitachi, Ltd. Automatic transmission
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US6843147B2 (en) * 2002-03-27 2005-01-18 Suzuki Motor Corporation Automatic transmission
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US8166837B2 (en) * 2007-12-22 2012-05-01 Deere & Company Transmission arrangement of an agricultural or industrial utility vehicle
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USRE39669E1 (en) 2007-06-05
EP1188593A3 (en) 2004-03-17
US20020066324A1 (en) 2002-06-06
JP2002087089A (ja) 2002-03-26
DE60117652T2 (de) 2006-08-10
EP1188593B1 (en) 2006-03-08
ATE319585T1 (de) 2006-03-15
EP1188593A2 (en) 2002-03-20

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